关于小学三年级速算与巧算奥数练习题

奥数对学生起到的并不仅仅是数学方面的作用，通常比普通数学要深奥些，快来做做奥数题来锻炼自己吧!

计算时间：正确率：

(1)146000÷125=(2)211211÷211=(3)7500÷25÷4=

(4)264264÷7÷11÷13=(5)(130+65)÷13=

(6)798÷125+202÷125=(7)432÷(8×9)=

(8)21×15÷5=(9)(54×24)÷(9×4)=

(10)(2×3×5×7×11×13×17×19)÷(38×51×65×77)=

(11)1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)=

(12)(110+77+88+99)÷11=

参考答案

(1)146000÷125(2)211211÷211 (3)7500÷25÷4

=146×1000÷125 =211×1001÷211 =7500÷(25×4)

=146×8 =1001 =7500÷100

=1168 =75

(4)264264÷7÷11÷13 (5)(130+65)÷13

=264×1001÷(7×11×13) =130÷13+65÷13

=264×1001÷1001 =10+5

=264 =15

(6)798÷125+202÷125(7)432÷(8×9)

=(798+202)÷125 =432÷8÷9

=1000÷125 =54÷9

=8 =6

(8)21×15÷5 (9)(54×24)÷(9×4)

=21×3 =54×24÷9÷4

=63 =54÷9×24÷4

=6×6

=36

(10)(2×3×5×7×11×13×17×19)÷(38×51×65×77)

=(2×19÷38)×(3×17÷51)×(5×13÷65)×(7×11÷77)

=1

(11)1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)

=1÷2×3÷3×4÷4×5÷×6

=1÷2×6

=3

(12)(110+77+88+99)÷11

=110÷11+77÷11+88÷11+99÷11

=10+7+8+9

=34